Karl will save $60. See calculations below:
12.25% of $8000 = $980
11.5% of $8000 = $920
At bank B he will have to pay extra = $980
At bank A he will have to pay extra = $920
If he borrows money from Bank A, he will save $60 ($980-$920).
To calculate percentages easily, use this free online Percentage Calculator.
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